A Federal Facilities Agreement (FFA) was signed by DOE and U. S.
Protection Agency (USEPA) in October, 1990. The Ohio Environmental
Protection Agency (OEPA) signed the FFA in July, 1993. DOE, as the
lead agency, is conducting the clean-up of the Mound Plan, with
oversight being provided by USEPA and OEPA.
A Record of Decision (ROD) was signed on June 12,
1995, to remove VOC contamination from the aquifer underlying the
facility by pumping and treating the groundwater with an air stripper.
Construction of the treatment system began in the Fall of 1996,
and as of February 18, 1997, that system is treating up to 140,000
gallons of groundwater per day.
Sediments in the Miami-Erie Canal are contaminated
with plutonium-238. This was caused by a plutonium waste line break
in 1969, and a subsequent rain event which washed the contamination
down a hillside to the canal. In October, 1996, DOE began the removing
about 20,000 cubic yards of contaminated soil for disposal at an
off-site facility. The entire removal action is expected to be completed
in December, 1997.
Several other smaller actions have also taken place
at Mound to remove radionuclide and VOC contamination. Once the
site is cleaned up, the city of Miamisburg may take ownership and
redevelop the site for economic use. There are several removal actions
to address radionuclide and VOC contamination in soil scheduled
to take place in the next few years. A new site operations contractor,
Babcock & Wilcox, has just taken over implementing the site
restoration management. They are due to release a schedule early
in1998, for completing the cleanup at the Mound Plant.
The above information is from the following on-line publications:
US EPA Region 5 NPL Fact Sheet, OHIO EPA ID# OH6890008984, February